These Israelites were practicing false worship right in front of Yahweh, instead of the true Yahweh worship. They were sacrificing in the gardens in some sort of a nature cult. They burned incense on bricks that was both a pagan and Israelite practice. Sitting inside tombs was an attempt to consult with the dead. If they spent the night in a secret place they were trying to conjure up a vision. Obviously eating pork was forbidden to the Israelites. Others drank some kind of terrible abominable broth. Some even wanted to keep Yahweh away because they were already part of some unknown rite or cult that made them holy. They were like smoke in Yahweh’s nose. They were like a continually burning fire. They really bothered Yahweh with their false worship practices.